Our Staff


Bengüsu Nar

Teacher (she/her)

Bengüsu is a senior student at Bahcesehir High School for Science and Technology and lives in Istanbul, Turkey. She has been to Canada/USA MathCamp twice. Planning to study applied mathematics in college, Bengüsu enjoys modeling mathematical concepts and pursuing interdisciplinary studies. Apart from  these, she is a professional robotics mentor in Turkey, training FLL teams with many international awards. Bengüsu loves talking about philosophy and cooking, but most importantly mathematics.

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Camila De Valencia

Teacher (she/her)

Camila is an undergraduate Human Biology, Health, and Society major at Cornell University. She is also minoring in Spanish. Her interests include foreign languages, world history, and math. She struggled with math when she was younger but she learned to love and appreciate it in high school so she joined Math Circle to encourage young students to pursue their interests in mathematics. Outside of academics she also loves swimming, hiking, and cooking.

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Cody Uman

Teacher (they/them)

Cody is an undergraduate mathematics student at Yale University. Their other academic interests include history and foreign languages. Cody fell in love with math in 6th grade, when they had an amazing teacher who showed them new ways to look at math. They joined Cambridge Math Circle to try to have the same effect on other young students. Outside of academics, Cody enjoys origami, running, biking, and playing trombone.


Diana Shklover

Teacher (she/her)

Diana is a high school student studying mathematics and computer science. She has been to Canada/USA Mathcamp twice. In her free time, she enjoys hiking, reading, and cooking.

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Eleni Persinger

Teacher (she/her)

Eleni is a junior in high school from Michigan, where she is part of the quiz bowl and golf teams. She loves learning about and teaching math, and she went to Canada/USA Mathcamp 2020. Eleni loves playing the violin, folding origami, coin collecting, woodworking, cooking and baking, crocheting, and playing golf. Eleni has two cats that always walk in front of her camera during Zoom calls!


Elijah Nudell-Cook

Teacher (he/him)

Elijah Nudell-Cook is a student at Emory University in Atlanta Georgia on the pre-med track majoring in Chemistry and Applied Mathematics. While never actively pursuing math outside school except for tutoring he has always loved the subject and finds it incredibly fascinating. He joined Cambridge Math because he loves working with kids and teaching them about things he's interested in. Outside school he enjoys running, playing jazz guitar, and going hiking.

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Emanuele Leoncini

Teacher (he/him)

Emanuele is a postdoc at Harvard University, working at the interface between quantitative biology and applied mathematics. He went to college at Università degli Studi di Firenze, where he also obtained a MSc in Applied Math. He then moved to Paris (France), where he obtained first a MSc at Université Paris VI and subsequently a PhD from École Polytechnique both on Applied Math to Biology. He has always been passionate about teaching, and has been teaching math since his early years in college. In his spare time, Emanuele likes playing and producing music with his band, swimming, and traveling.

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Ilaria Seidel

Teacher (she/her)

Ilaria is a junior at Commonwealth High School in Boston. She loves math and is excited to share her enthusiasm with the CMC students!

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Julia Woodward

Teacher (she/her)

Julia is a first-year student at Amherst College, planning to major in math or physics. She has been a math tutor since the beginning of high school, and loves teaching! Julia’s favorite parts about math are probably logic and proofs, although she also enjoys parts of calculus. In her spare time, Julia likes playing soccer, playing piano, and doing jigsaw puzzles.

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Jonathan Zhang

Teacher (he/him)

Jonathan is a senior at Hunter College High School. He accelerated three years in math, and so he also participates in dual enrollment math classes at Hunter College. Jonathan has always had a passion for math since he was little and loves to participate in math contests. He is one of the captains of his school's math team, and is a 5x qualifier for AIME and 1x qualifier for USAJMO. Jonathan participated in a math circle when he was younger and really enjoyed it, so he became a teacher to give students a similar experience to the one he had. Outside of Cambridge Math Circle, he also teaches math to Hunter elementary school students. In his spare time, Jonathan loves playing basketball and volleyball, making music, competing with his friends in board games, and meeting new people.

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Kat Zhou

Teacher (she/they)

Kat received her bachelor’s degree in mathematics from Harvard College, before pursuing her passion for theatrical design at Boston University, where she received her MFA. Since high school, they have been sharing their love of problem-solving by teaching math to students all ages. She is deeply committed to educational equity and strongly believes that math is for everybody.

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Laura Pierson

Teacher (she/her)

Laura is a Harvard undergraduate studying Mathematics. Laura has many years of experience teaching mathematics to young people. She has taught at Girl's Angle, as well as the Canada/USA Math Camp.


Lili Wilson

Teacher (she/her)

Lili is a senior at Hunter College High School in New York City. She is an active member of her school’s math team, as well as captain of the math modeling club and robotics team. She will be studying computer science at MIT next school year. In her spare time, Lili can be found building robots, designing apps, and participating in programming competitions. She also loves playing ultimate frisbee and doing puzzles like SET, crosswords, and the New York Times Spelling Bee. Lili’s passion for math began in elementary school, and has only grown since then. She can’t wait to share mathematical discoveries with her students, and hopes to help everyone find some kind of joy in problem solving with math.

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Maya Mau

Teacher (she/her)

Maya is from New York City and is currently pursuing her bachelor's degree at McGill University. She has experience tutoring students in both math and English skills and recently did quantitative data analysis with Central Park Conservancy Historian Sara Cedar Miller for her upcoming book to be published by Columbia University Press. When not studying or teaching math, she enjoys cooking, writing, and running. Fun fact: She was Junior Olympic champion in synchronized swimming!

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Michelle Liu

Teacher (she/her)

Michelle is a senior at the Davidson Academy in Nevada. She loves teaching and has taught at multiple math summer camps and programs since 8th grade. She is the president of her school's math club as well as a member of the Science Olympiad team. Michelle has also been to Canada/USA Mathcamp twice. In her spare time, she enjoys rock climbing, playing piano, and doing improv.

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Mira Bernstein

Co-Founder (she/her)

Mira received her PhD in math from Harvard University, taught at Wellesley College for ten years, and then left academia to pursue her dual interests in data science and math enrichment education. She runs Canada/USA Mathcamp, an international summer program for mathematically talented high-school students, and helped found Proof School, a school for kids who love math in San Francisco. Her work at a summer math program for underserved middle-school students was featured in the New York Times. Mira’s experience with older students has convinced her of the importance of creating STEM pathways for underserved students, starting in elementary school. She lives in Cambridge and is excited for this opportunity to contribute to her city’s community.

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Natali Gogishvili

Teacher (she/her)

Natali has been to Canada/USA Mathcamp and Math Beyond Limits as a camper. She participated in many National Olympiads in Georgia. Natali loves Topology, Combinatorics, and Set theory and enjoys watching YouTube channels such as 3Blue1Brown and Numberphile. In her spare time, Natali likes dancing, solving and writing puzzles, and drawing on the walls with a blue tape.

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Nataliya Yufa

Co-Founder (she/her)

Nataliya received her bachelor’s degrees from MIT in mathematics and physics, followed by a PhD in physics from the University of Chicago. It was in Chicago that she started teaching, working with people of all ages -- school children, undergraduates, and adults. She served three years as a teacher/director of STEM afterschool programs within the Chicago Public Schools, and one year in Houston. These experiences inspired Nataliya to become a full-time math educator, following work as a math education researcher. Since then, Nataliya has taught math at several Boston-area schools, including co-teaching the CSUS math club. She has an M.Ed. from Lesley University in Math Education.

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Noah Olsman

Teacher (he/him)

Noah is a postdoctoral research fellow at Harvard Medical School in the Department of Systems Biology, where he studies biological engineering. He received his PhD in Control and Dynamical Systems from the California Institute of Technology. He has previously worked with Math Academy where he taught a class on communication and information theory to accelerated middle-school students, as well doing one-on-one tutoring for a variety of math courses at the high school and college level. In his spare time, he enjoys puzzle competitions, American folk and blues music, and reading about the history of science.

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Phoebe Lin

Teacher (she/her)

Phoebe is a first year student at MIT exploring math, music, and atmospheric sciences. Before college, Phoebe participated in contests such as the AMC and Math Prize for Girls, served as an officer of her school’s math club, and went to Canada/USA Mathcamp, and she is excited to share what she’s learned with younger students! In her free time, you can find Phoebe weather forecasting, watching figure skating, or playing the flute in the MIT Symphony Orchestra.

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Poonam Sahoo

Teacher (she/her)

Poonam is a high school senior at Acton-Boxborough Regional High School. She is a five-time AIME qualifier and received an Honorable Mention and Bronze Medal at the Math Prize for Girls and Math Prize for Girls Olympiad, respectively. She attended the PROMYS program in 2018 and 2019 as well as Canada/USA Mathcamp in 2020. In her spare time, Poonam enjoys baking bread, writing, and calligraphy.

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Rishi Verma

Teacher (he/him)

Rishi is a senior at Sycamore High School, and he plans to double major in math and computer science in college. He spent two summers as a camper at Canada/USA Mathcamp, and he enjoys studying topology and combinatorics. He has competed twice in the National MATHCOUNTS competition and twice in the USAJMO math olympiad. In his free time, Rishi enjoys hiking, reading, cooking, playing card games, and puzzling. 

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Roy Long

Teacher (he/him)

Roy is a 12th grader from the Bay Area who loves doing mathematics and sharing it with others. Roy's love for mathematics began in elementary school, when he attended a local math circle at a friend's house. He is an alumni of the Canada/USA Mathcamp ('18, '20), as well as the Hampshire College Summer Studies in Mathematics ('19). Roy became interested in teaching mathematics after attending HCSSiM, where he experienced both teaching and collaboratively learning with his peers. He's now excited to return to math circles and as an instructor and work with younger students. In his spare time, Roy likes playing the clarinet, reading books, running, writing poetry, and watching anime.

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Sarah Figge Hussain

Communications Manager

Sarah supports and guides the communications work of the Cambridge Math Circle, focusing on building relationships with Cambridge schools and City programs. She also works at Harvard managing three research clusters focusing on inequality, global regions, and public life in Africa. Over the course of her career, she has acquired a unique blend of writing and strategic communications skills, project management, event planning, and platform management skills along with community-building experience. Sarah is committed to promoting social justice efforts within nonprofit and academic spaces.

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Sarah Gleghorn

Teacher (she/her)

Sarah is an undergraduate mathematics student at Cambridge University UK. She enjoys learning about pure mathematics, particularly algebra and logic. During her school years, she took part in many mathematical olympiads and continues to mentor students for UKMT. Outside of mathematics, she enjoys cooking, reading and coding.

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Sasha Robert Brownsberger

Teacher (he/him)

Sasha is a Harvard graduate student working in Physics. Sasha has many years of teaching experience under his belt. He loves working with kids and solving new problems, when not working on his astrophysics research.

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Scott Luro

Teacher (he/him)

Scott is a PhD student at Harvard Medical School studying systems biology. He has experience teaching extracurricular science to middle school students and joined The Cambridge Math Circle during the Fall of 2020. He enjoys seeing kids work together to solve challenging and exciting math problems.

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Sophie Woodward

Teacher (she/her)

Sophie is an undergraduate at Harvard College Class of 2022 studying Math and Statistics. Previously, Sophie worked as a math tutor and camp counselor, and loves working with kids! Outside of classes, Sophie teaches as a course assistant and is involved in peer counseling. In her free time she likes to run and create messes in the kitchen.